bump python-hcl2 from <6.0.0 (5.1.1) to >=7.2.1

Author: ribejara-te

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "stacks"
-version = "2.0.15"
+version = "2.0.16"
 description = "Stacks, the Terraform code pre-processor"
 readme = "README.md"
 requires-python = ">=3.10"
@@ -12,7 +12,7 @@ dependencies = [
     "importlib>=1.0.4",
     "jinja2>=3.1.4",
     "packaging>=24.2",
-    "python-hcl2<6.0.0", # https://github.com/amplify-education/python-hcl2/issues/183
+    "python-hcl2>=7.2.1",
     "pyyaml>=6.0.2",
 ]